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  • RainbowImaging Pentax PK lens to Micro 4/3 Four Thirds System Camera Mount Adapter, Olympus PEN E-P1, Panasonic Lumix DMC-GF1, GH1, G1, G2, G10, (RainbowImaging Adapter)
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RainbowImaging Pentax PK lens to Micro 4/3 Four Thirds System Camera Mount Adapter, Olympus PEN E-P1, Panasonic Lumix DMC-GF1, GH1, G1, G2, G10, (RainbowImaging Adapter)


Currently unavailable.
We don't know when or if this item will be back in stock.
  • Solid metal mount lens adapter allows Pentax Manual Lens to be used on micro 4/3 camera body.
  • Allows Lens focus to infinity
  • Superior quality, made of brass, anodized aluminum camera body mount, smooth surface finishing!
  • Compatible to: Panasonic G1 G2 G3 G10 GH1 GH2 GH3 GF1 GF2 GF3 GF5 GX1 Olympus E-P1 E-P2 E-P3 E-PL1 E-PL2 E-PL3

Technical Details

  • Brand Name: Rainbowimaging
  • Model: M43AdapterPentax

Product Details

  • Shipping Weight: 3.2 ounces
  • ASIN: B002U4RQLK
  • Item model number: M43AdapterPentax
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (11 customer reviews)
  • Date first available at Amazon.com: October 24, 2009

Product Description

RainbowImaging Pentax PK lens to Micro 4/3 Four Thirds MFT System Camera Mount Adapter (RainbowImaging Adapter)

Customer Reviews

4.2 out of 5 stars
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See all 11 customer reviews
Solid construction and perfect fit.
E. A. Gonzalez
The fit on my OM-D is a bit tight and I found a small metal shard inside when I unpacked it that could have gotten into my camera.
Robert S. Donovan
It is a simple, yet solidly-built attachment that connects to the lenses and camera body fine...maybe a little too fine.
M. Loomis

Most Helpful Customer Reviews

3 of 3 people found the following review helpful By Les Schmader on November 7, 2011
Verified Purchase
This is my third Rainbow Imaging K-mount to m4/3 adapter. All three have fit and performed well. This model appears to be the earlier version with the paddle type release versus the joystick of the other models. And each has had a different type of Knurling on the mount. Fit and finish is fine, especially at the sale price of @$13.

All three focus "beyond" infinity by roughly the same amount with my 28 and 50mm primes. It would be nice if they were closer to infinity at the dead stop, but I can't complain for the price and convenience.

It's become so comfortable using the adapted SMC-M primes on the G1, that I forget that I lose the IS. These really expand the use of these toys.
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2 of 2 people found the following review helpful By Chris Gonzalez on July 14, 2013
Verified Purchase
So I'll confirm the fears this thing does jam up.

After 10 minutes of struggling we go it off a lens but if it had been a older person with weaker hands they might not have had the same luck.

It works great though. Just be careful how you insert the lens and make sure the release mechanism travels all the way before inserting a lens.
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2 of 2 people found the following review helpful By Bill in AZ on February 13, 2013
Verified Purchase
I bought a MFT last year with one lens. I'm a learning photographer without a lot of extra cash. I did have two 30+ year old lenses from my old K1000 and spotted this adapter.

One lens was the kit 50mm prime lens and the other a 200mm zoom from Sears (of all places) that I must have bought back then.

Anyway, once you understand the 'infinity' issues and the 'crop factor' issues, things that purists probably don't want to deal with, for under $20 I put the equivalent of easily a $1000 worth of new lenses to work. The results are very good and have allowed me to learn without investing before I'm sure of what I want or need.

The device has been solid and easy to use. I'm happy with it.
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2 of 2 people found the following review helpful By Robert S. Donovan on January 24, 2013
Verified Purchase
The fit on my OM-D is a bit tight and I found a small metal shard inside when I unpacked it that could have gotten into my camera. I bought this adapter to make use of an old K-mount manual lens that I use occasionally and for that purpose I think it is fine. Just be sure to check the inside carefully before use! If I was using it daily I'd opt for a better made version from a more reputable brand.
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1 of 1 people found the following review helpful By Wes on May 29, 2010
Verified Purchase
I have used this adapter with vintage Pentax "A" lenses and it works great and is a great buy.
A small pin on the side of the adapter releases the lens when you push the pin toward the camera.
With manual Pentax lenses on the Olympus EPL1, the camera will meter in "A" mode as long as the lens itself has a manual aperature setting that you can preset. There is no auto focus. Big Deal ;) Vintage lenses have no auto focus in the lens anyway. (If you want to shoot fast without focusing at all, learn to use the depth of field scale imprinted on your lens and preset the focus from 6 feet to infinity like the old disposable cameras.)
Some of the newer lenses for Pentax PK mount do not have a manual aperature setting, so you can only shoot wide open.
My only concern is that the release pin seems a little loose; on the other hand, if it were too tight it could bind and cause a lens to stick.
So far I am very pleased with this product especially for the price paid.
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1 of 1 people found the following review helpful By M. Loomis on January 21, 2010
Verified Purchase
I bought this to use on some old Pentax lens I have from an old Pentax K1000 camera that has been collecting dust. It is a simple, yet solidly-built attachment that connects to the lenses and camera body fine...maybe a little too fine. The first lens I hooked it up to worked fine, as did the second lens but when I tried to remove it from the second lens I found that it wouldn't budge. I did notice a distinct CLICK when I connected it to the second lens that didn't happen with the first, but I can't figure out why it made the click or how to get it off. Really though, for $40 or so it wouldn't be a bad idea to have an adapter permanently connected to every Pentax lens since I will never use that old camera again, and as an adapter it works just as it should.
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